"Side view of skull of Cape Jumping Hare. Pmx, premaxilla; Mx, maxilla; Ma, malar; Fr, frontal; L, lachrymal; Pa, parietal; Na, nasal; Sq, squamosal; Ty, tympanic; ExO, exoccipital; AS, alisphenoid; OS, orbito-sphenoid; Per, mastoid bulla." —The Encyclopedia Britannica, 1903

Cape Jumping Hare

"Side view of skull of Cape Jumping Hare. Pmx, premaxilla; Mx, maxilla; Ma, malar; Fr, frontal; L, lachrymal;…

"The skull of a cod. b, branchiostegal rays born on c.h., the ceratohyal bone; d, dentary portion of the mandible; f, frontal; h.m., hyomandibular; i.o., interoperculum; l, lachrymal; m, maxilla; n, nasal; o, operculum; p.m., premaxilla; p.o., preoperculum; p.s., parasphenoid; q, quadrate; s.o., sub-operculum; s.oc., supra-occipital." — Galloway

Cod Skull

"The skull of a cod. b, branchiostegal rays born on c.h., the ceratohyal bone; d, dentary portion of…

The head is the part of the body that contains the brain and the organs of the special senses.

Head

The head is the part of the body that contains the brain and the organs of the special senses.

"Side view of skull of horse, with the bone removed so as to expose the whole of the teeth. PMx, premaxilla; Mx, maxilla; Na, nasal bone; Ma, malar bone; L, lacrymal bone; Fr, frontal bone; Sq, squamosal bone; Pa, parietal bone; oc, occipital condyle; pp, paroccipital process; i, the three incisor teeth; c, the canine tooth; pm1, the situation of the rudimentary first premolar, which has been lost in the lower, but is present in the upper jaw; pm2, pm3, and pm4, the three fully-developed premolar teeth; m, the three true molar teeth." — Encyclopedia Britannica, 1893

Horse Skull

"Side view of skull of horse, with the bone removed so as to expose the whole of the teeth. PMx, premaxilla;…

The mouth, nose, and pharynx, with the larynx and commencement of gullet (esophagus), seen in section. Labels: a, vertebral column; b, gullet (esophagus); c, trachea; d, larynx; e, epiglottis; f, soft palate, between f and e is the opening at back of cavity or faces; g, opening of Eustachian tube; h, nasal cavity; k, tongue; l, hard palate; m, sphenoid bone at base of skull; n, roof of nasal cavity; o, p, q, placed in nasal cavity.

The Mouth, Nose, and Pharynx

The mouth, nose, and pharynx, with the larynx and commencement of gullet (esophagus), seen in section.…

"Diagram of a Sectional View of Nasal and Throat Passageways. <em>C</em>, nasal cavities; <em>T</em>, tongue; <em>L</em>, lower jaw; <em>M</em>, Mouth; <em>U</em>, uvula; <em>E</em>, epiglottis; <em>G</em>, larynx; <em>O</em>, gullet, or esophagus." &mdash; Blaisedell, 1904

Nasal and throat passageways

"Diagram of a Sectional View of Nasal and Throat Passageways. C, nasal cavities; T,…

"Nasal Cavities, seen from Below. The sense of smell is located in the membrane which lines the cavities of the nose. This delicate membrane, over which the fibers of the olfactory nerves, or the nerves of smell, are distributed, is kept continually mois by the mucus which it secretes." &mdash; Blaisedell, 1904

Nasal cavities

"Nasal Cavities, seen from Below. The sense of smell is located in the membrane which lines the cavities…

Vertical longitudinal section of nasal cavity. Labels: 1, olfactory nerve; v, branch of fifth nerve; h, hard palate

Nasal Cavity

Vertical longitudinal section of nasal cavity. Labels: 1, olfactory nerve; v, branch of fifth nerve;…

Nasal cavity, right lateral wall, from the left.

Nasal Cavity

Nasal cavity, right lateral wall, from the left.

The inner wall of the nasal fossae, or septum of the nose.

Nasal Fossae

The inner wall of the nasal fossae, or septum of the nose.

The nasal fossae (cavum nasi) are two irregular cavities in the middle of the face, separated by the septum nasi, opening in front by the anterior nares, behind by the posterior nares (choanae) into the naso-pharynx.

The Nasal Fossae

The nasal fossae (cavum nasi) are two irregular cavities in the middle of the face, separated by the…

"A tiny block of tissue from the membrane lining the inner surface of the nose. Note the hundreds of cillia and the gland m which gives out the slippery white or colorless fluid called mucus." &mdash;Davison, 1910

Section of nasal tissue

"A tiny block of tissue from the membrane lining the inner surface of the nose. Note the hundreds of…

Inferior turbinated bone, convex surface. The inferior turbinated bones are situated on the outer wall of each side of the nostril. Teach consists of a layer of thin, spongy bone, curled upon itself like a scroll.

Human Nostril Bone

Inferior turbinated bone, convex surface. The inferior turbinated bones are situated on the outer wall…

The pituitary membrane (or the schneiderian) is the mucous membrane lining the nasal fossae.

The Pituitary Membrane

The pituitary membrane (or the schneiderian) is the mucous membrane lining the nasal fossae.

"Skull of Polyodon. n, nasal cavity; sq, squamosal; mh, hyomandibular; sy, symplectic; pa, palate-pterygold; m, Meckelian cartiledge; mx, maxillary; d, dentary; h, hyoid; op, operculum; br, branchiostergal; s.cl, supraclavicular; p.cl, postclavicular; cl, clavicle; i.cl, infraclavicular." &mdash; Encyclopedia Britannica, 1893

Polyodon

"Skull of Polyodon. n, nasal cavity; sq, squamosal; mh, hyomandibular; sy, symplectic; pa, palate-pterygold;…

The coronal section through the frontal sinus and nasal fossa.

Skull

The coronal section through the frontal sinus and nasal fossa.

The base of the skull. The lower jaw has been removed. At the lower part of the figure is the hard palate forming the roof of the mouth and surrounded by the upper set of teeth

Base of the Skull

The base of the skull. The lower jaw has been removed. At the lower part of the figure is the hard palate…

A side view of the skull. Labels: O, occipital bone; T, temporal; Pr, parietal; F, frontal; S, sphenoid; Z, malar; Mx, maxilla; N, nasal; E, ethmoid; L, lachrymal; Md, inferior maxilla.

Side View of the Skull

A side view of the skull. Labels: O, occipital bone; T, temporal; Pr, parietal; F, frontal; S, sphenoid;…

The vomer is a single bone, situated vertically at the back part of the nasal fossae, forming part of the septum of the nose. It is thin, somewhat like a ploughshare in form; but varies in different individuals, being frequently bent to one of the other side; it presents for examination two surfaces and four borders.

Vomer

The vomer is a single bone, situated vertically at the back part of the nasal fossae, forming part of…

Vomer bone, a single bone placed at the back part of the nasal cavity, and forms part of the septum of the nasal fossae.

Human Vomer Nasal Bone

Vomer bone, a single bone placed at the back part of the nasal cavity, and forms part of the septum…